Spinodal decomposition in Fe-Cr alloys: Experimental study at the atomic level and comparison with computer models. 2: Development of domain size and composition amplitude
- Univ. of Oxford (United Kingdom). Dept. of Materials
- Oak Ridge National Lab., TN (United States). Metals and Ceramics Division
- Univ. of Sussex, Brighton (United Kingdom). School of Mathematical and Physical Sciences
The three-dimensional interconnected microstructures resulting from spinodal decomposition in a series of thermally aged Fe-Cr alloys have been analyzed in terms of scale and composition amplitude. The development of the microstructure scale was found to fit a power law with a time exponent considerably smaller than that predicted by the LSW theory but in agreement with Monte Carlo simulations of the decomposition. Numerical solutions to the classical non-linear Cahn-Hilliard-Cook equation were found to fit the classical LSW theory. A model, based on the non-linear theory of spinodal decomposition by Langer et al. is used to quantify the composition amplitude at any stage of the phase separation. A detailed comparison between the atomic scale experimental results and computer simulations of spinodal decomposition is given.
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 105985
- Journal Information:
- Acta Metallurgica et Materialia, Vol. 43, Issue 9; Other Information: PBD: Sep 1995
- Country of Publication:
- United States
- Language:
- English
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